Akademik Veri Yönetim Sistemi
Journal of Energy Storage, cilt.166, 2026 (SCI-Expanded, Scopus)
Room-temperature sodium‑sulfur (RT NaS) batteries offer a promising solution for next-generation energy storage systems, combining high energy density with high power density. The operational mechanism of RT NaS batteries under practical conditions, including high sulfur loading, limited electrolyte, and a low capacity ratio between the anode and cathode electrodes, is crucial for real-world applications. This study elucidates the structure–temperature–function relationship, providing an approach for the rational design of porous carbon hosts for sulfur. This strategy aims to synthesize high-performance sulfur cathodes that improve compatibility between cathode electrodes and electrolytes, advancing ultra-stable and ultra-long-life RT NaS batteries. The temperature-controlled structural differences directly affect sulfur distribution, polysulfide immobilization, and conversion kinetics, leading to unique electrochemical behaviors of the cathodes. The RT NaS batteries created by S/NPC-800-A and S/NPC-900-A exhibited outstanding performances with a specific capacity of 1200 mAh g−1 and 1310mAhg−1 (based on the mass of sulfur) at 0.1C (1C = 1676 mAhg−1), respectively, and 605 mAhg−1 at 5C after 6000 cycles. These results demonstrate that the approach developed here to create unique cathode materials effectively extends the cycle life of RT NaS batteries without significantly compromising electrochemical performance at very high current.